Collector-ring.



G. W. STARKER.

COLLECTOR RING.

APPLICATION FILE DEG.6,1912.

1,108,940 Patented Sept. 1, 1914.

WITNESSES: ENT R UNHED s rairns r CHARLES W. STARKER, PI'ITSBD HIGH,

HOUSE ELECTRIC AND MAHUFACTURIEG COMPANY, A

AIENT err-non.

ASSIGNOR T WESTING- COREORATIGN OF PENN- NNSYLl/ANIA,

COLLECTOR-RIN G.

icense.

Application filed flecemher 6 12.

, invented a new and useful oven. at in Colle tor-Rings, of which tln rollou'ing specil" cation.

This invention relates tr 1' structures for alternating cur i material upon the shaft in whicl'i a atight fit and good machines which employ contact members,

Ely invention has for its object the provision of a new and simple construction whereby the insulation of collector rings and their terminals may be eileeted in an im proved manner,

In previous devices of. this character, it has been necessary to pass the leads through holes drilled in one or more rings, ii'isulating the leads from these rings and then soldering the leads to their respective rings. proposc'to use concentric tubes of insulating re contained the terminals tor rings are placed on the tubes w and are allowed to shrink in order to insure contact with the term? nals. q

Figure 1 IS a loi'igitudinal section on the line I--I of Fig. 2. Fig. :2 is an end view of the collector rin mounted. on a 2i t. 3 is a cross-scetion on the line lll -lll of Fig. 1.

Upon the shaft 1 of an electric machine are, placed concentric tubes 2, 3 and 4 0"" insulating material, preferably that known in the art as mica "ta. Mounted upon the outer tube, are collector rings 5, ('3 and 7. Connected to ring 7 a terminals that ertends through slot- 9 in the tube 2, a slot 10 in the tube 3, and em es thrcuglrthe slot 11 in the tube lQllP-lllfit a. loop 12 whic is adapted to be connec' lead 13. In a like manner terminals .i and con.- nected to rings and 6 and to leads 1%. and 17. v The interior surfaces of the rings and the ends of the terminals which are adapted to make contact with the rings, are tinned.

In assembling the structure, the micarta tubes, which have been prepared in the proper sizes, are first concentrically assembled, as shown, and the terminals 8, 14, and 15 are inserted. Then the rings 5, 6 and 7,

. STAILKER,

Specification of Letters Eatent.

1 l l l l l l i Patented Sept. 1, 1914.

Serial lie. "$35,238.

which have been previously heated, are placed. upon the tube 5 over the ends of the terminals, spaced apart shown, and allowed to cool andthereby slu'iulr into close eon the tube and into good Contact "llllP-lS-i. The collector is. then Jhe shaft which may have a e to insure a rigid connecde tolit more closely tion, 'l. i the pro 7 ncess. that, by means of this construction, the terminals may all be brought through to one side of the rings, preferably the inner, so that connections may easily be made to Windings of the rotating part of the machine.

As shown the deviceis provided with three rings and the terminals are placed 120 apart around the shaft. It will be understood that any desired number of rings maybe used, the only modifications in construction being the addition of other rings and dill'erent spacing oftheterminals around the shaft.

The advantages of this construction, aside from the convenient connections state above, are that the terminals are entirely insul ted from the shaft and from the rings her which they extend, while the drilling of holes and the provision of insulation therefor is avoided. Another important ad vantage is the cheapness of construction, it being possible to construct this device at less than half the cost of the devices in present me. The collectors may be made up in standard sizes and kept in stock for future was.

I cl:-.im my invention:

1. In combination, a tube of insulating material, said tube comprising a plurality of concentric layers having recesses, collector rings upon the said tube, and terminals for said rin located between the inner and the outer concentric layers and in said recesses.

2. In combination, a tube otinsulating material, said tube comprising three concen trio layers, collector-rings spa ed apart upon said tube. terminals for said r longitud zally between the inner and the outer concentric layers, the ends of said terminals lying in substantially the same circumference on the outer periphery of the ngs extending it will be noted ing slots, t .2115; in and; col-- l-ector rings spaced. apart u on tube and connected. to

fl teriuim l comi. 1 Much, a tube insulation comprising a plurality of concentric leyers, an intermediate layer of said tu longitudinal slots spaced QlJi Lrt circumferentially and the exterior layer having slots which, in part, register with the first named slot, collector rings mounted on said tube, and. terminals in said slote, each of which is connected at one end to one of said rings and at the other end is adapted for external electrical connection. v

5. In combination, a tube of insulation adapted to be placed upon a shaft, said tube comprising concentric layers, collector rings spaced apart on said tube, terminals in slots in an intermediate layer, said terminals egrtenrling, at one end, through slots in the other layer to connect with rings and, at the other end, extending tl'irough slots in the outer layer and adapted for external electrical connection.

it. aw 1 en m1 w e: Signed and leuAL. j

be having l l l l 1 l l ll; is hereby that iii Letters Patent No. 1,l08,9l-O, granted sealed this 29th day of September, A. D., 1.9

tor rings spaced apart on said tu' limimale 111 the slots in an intermediate tube and extending-at their respective ends through the slots in the outer tube to connect to the said rings and to electrical conductors.

In testimony whereof, I have hereunto subscribed. my ,name this 80th dayof ,Noveiuher, 1912 CHARLES W. STARKER.

l fituesses THEoeALD O. Wines,

B. B, Hmus.

September 1,

an improvement in Collectoullinge, error appears in the printed specificaon requiring correction as follows: Page 2, hue 2], oi the wold other need outer; and that the said Letters-Patent should be read with this cdx'rectlon therein that the may conform to the record of the case in the Patent Oflice.

ll. WHITEHEAD, 

